Nearly 400 migrants tunnel under border fence to enter United States from Mexico

YUMA, Arizona (KTRK) -- Hundreds of migrants were arrested in Arizona, after crawling through holes under the U.S.-Mexico border.

Authorities say U.S. border patrol caught nearly 400 people entering the country illegally through seven holes dug under a steel border fence.

They believe smugglers dug the holes, but they haven't been found.

Most of the groups are families from Guatemala, including nearly 200 children.
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